尝试使用 Jasmine 对数据服务执行端到端测试时遇到空注入器错误

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在尝试使用 Jasmine 对数据服务执行端到端测试时遇到空注入器错误。

NullinjectorError: R3InjectorError(DynamicTestModulE)[Databaseservice -> AngularFirestore -> InjectionToken angularfire2.app.options -> InjectionToken angularfire2.app.options]： NullinjectorError：没有 InjectionToken angularfire2.app.options 的提供者！

如果我运行 'ng test' 总是显示这个错误

Databaseservice > should be created
NullinjectorError: R3InjectorError(DynamicTestModulE)[Databaseservice -> AngularFirestore -> InjectionToken angularfire2.app.options -> InjectionToken angularfire2.app.options]: 
  NullinjectorError: No provIDer for InjectionToken angularfire2.app.options!
error propertIEs: Object({ ngTempTokenPath: null,ngTokenPath: [ 'Databaseservice','AngularFirestore','InjectionToken angularfire2.app.options','InjectionToken angularfire2.app.options' ] })
    at <Jasmine>
    at Nullinjector.get (http://localhost:9876/_karma_webpack_/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.Js:915:1)
    at R3Injector.get (http://localhost:9876/_karma_webpack_/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.Js:11082:1)
    at R3Injector.get (http://localhost:9876/_karma_webpack_/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.Js:11082:1)
    at injecTinjectorOnly (http://localhost:9876/_karma_webpack_/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.Js:801:1)
    at ɵɵinject (http://localhost:9876/_karma_webpack_/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.Js:805:1)
    at Object.AngularFirestore_Factory [as factory] (http://localhost:9876/_karma_webpack_/node_modules/@angular/fire/__ivy_ngcc__/fesm2015/angular-fire-firestore.Js:869:149)
    at R3Injector.hydrate (http://localhost:9876/_karma_webpack_/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.Js:11249:1)
    at R3Injector.get (http://localhost:9876/_karma_webpack_/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.Js:11071:1)
    at injecTinjectorOnly (http://localhost:9876/_karma_webpack_/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.Js:801:1)
    at ɵɵinject (http://localhost:9876/_karma_webpack_/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.Js:805:1)
Expected undefined to be truthy.
Error: Expected undefined to be truthy.
    at <Jasmine>
    at UserContext.<anonymous> (http://localhost:9876/_karma_webpack_/src/app/shared/database/database.service.spec.ts:14:21)
    at ZoneDelegate.invoke (http://localhost:9876/_karma_webpack_/node_modules/zone.Js/dist/zone-evergreen.Js:364:1)

这是我的database.service.spec.ts

import { TESTBed } from '@angular/core/tesTing';

import { Databaseservice } from './database.service';

describe('Databaseservice',() => {
  let service: Databaseservice;

  beforeEach(() => {
    TESTBed.configureTesTingModule({});
    service = TESTBed.inject(DatabaseservicE);
  });

  it('should be created',() => {
    expect(servicE).toBeTruthy();
  });
});

database.service.ts

import { Injec@R_404_5991@ } from '@angular/core';
// firebase
import { AngularFirestore } from '@angular/fire/firestore';
import firebase from "firebase/app";
import { environment } from 'src/environments/environment.prod';

@Injec@R_404_5991@({
  provIDedIn: 'root'
})
export class Databaseservice {
  public frb: any = firebase;
  public allCollections = {
    users: 'users',};
  constructor(
    public afs: AngularFirestore,) {}
  // create
  adddocument(collection:string,docObject:any){
    return this.afs.collection(collection).add(docObject);
  }
}

这里是 app.module.ts

import { NgModule } from "@angular/core";
import { browserModule } from "@angular/platform-browser";
import { RouteReuseStrategy } from "@angular/router";
import { PathLOCATIOnStrategy,LOCATIOnStrategy } from "@angular/common";

import { IonicModule,IonicRouteStrategy } from "@ionic/angular";
import { SplashScreen } from "@ionic-native/splash-screen/ngx";
import { Statusbar } from "@ionic-native/status-bar/ngx";

import { AppRoutIngModule } from "./app-routIng.module";
import { AppComponent } from "./app.component";

import { httpClIEntModule } from "@angular/common/http";
// firebase
import { AngularFireModule } from "@angular/fire";
import { AngularFireAuthModule } from "@angular/fire/auth";
import { AngularFireDatabaseModule } from "@angular/fire/database";
import { AngularFirestoreModule } from "@angular/fire/firestore";
import { AngularFirestore } from "@angular/fire/firestore";
import { environment } from "../environments/environment";
import { FormsModule,ReactiveFormsModule } from "@angular/forms";

// ion2-calendar
import { CalendarModule } from "ion2-calendar";

@NgModule({
  declarations: [AppComponent],entryComponents: [],imports: [
    browserModule,IonicModule.forRoot(),AppRoutIngModule,AngularFireModule.initializeApp(environment.firebaseConfig),AngularFireAuthModule,AngularFireDatabaseModule,AngularFirestoreModule,AngularFirestore,CalendarModule,httpClIEntModule,FormsModule,ReactiveFormsModule,],provIDers: [
    Statusbar,SplashScreen,{ provIDe: RouteReuseStrategy,useClass: IonicRouteStrategy },{ provIDe: LOCATIOnStrategy,useClass: PathLOCATIOnStrategy },bootstrap: [AppComponent],})
export class AppModule {}

package.Json

{
  "name": "****","version": "0.0.1","author": "Ionic Framework","homepage": "https://ionicframework.com/","scripts": {
    "ng": "ng","start": "ng serve","build": "ng build","test": "ng test","lint": "ng lint","e2e": "ng e2e"
  },"private": true,"dependencIEs": {
    "@angular/common": "~10.0.0","@angular/core": "~10.0.0","@angular/fire": "^6.0.4","@angular/forms": "~10.0.0","@angular/platform-browser": "~10.0.0","@angular/platform-browser-dynamic": "~10.0.0","@angular/router": "~10.0.0","@capacitor/androID": "^2.4.5","@capacitor/core": "2.4.5","@codetrix-studio/capacitor-Google-auth": "^2.1.3","@ionic-native/core": "^5.0.0","@ionic-native/splash-screen": "^5.0.0","@ionic-native/status-bar": "^5.0.0","@ionic/angular": "^5.0.0","@ionic/pwa-elements": "^3.0.2","firebase": "^8.2.7","firebaseui": "^4.7.1","ion2-calendar": "^3.5.0","moment": "^2.24.0","rxJs": "~6.5.5","talisman": "^1.1.4","tslib": "^2.0.0","zone.Js": "~0.10.3"
  },"devDependencIEs": {
    "@angular-devkit/build-angular": "~0.1000.0","@angular/cli": "~10.0.5","@angular/compiler": "~10.0.0","@angular/compiler-cli": "~10.0.0","@angular/language-service": "~10.0.0","@capacitor/cli": "2.4.5","@ionic/angular-toolkit": "^2.3.0","@types/jasmine": "~3.5.0","@types/jasminewd2": "~2.0.3","@types/node": "^12.11.1","codelyzer": "^6.0.0","jasmine-core": "~3.5.0","jasmine-spec-reporter": "~5.0.0","karma": "~5.0.0","karma-Chrome-launcher": "~3.1.0","karma-coverage-istanbul-reporter": "~3.0.2","karma-jasmine": "~3.3.0","karma-jasmine-HTML-reporter": "^1.5.0","protractor": "~7.0.0","ts-node": "~8.3.0","tslint": "~6.1.0","typescript": "~3.9.5"
  },"description": "An Ionic project"
}

  TESTBed.configureTesTingModule({});

  TESTBed.configureTesTingModule({
    AngularFireModule.initializeApp(environment.firebaseConfig),AngularFireAuthModule,AngularFireDatabaseModule,AngularFirestoreModule,AngularFirestore,});

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